Creating a function with a logical output.

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Craig
Craig 2013-2-14
Hi all,
I am quite confused. I have a function say like this:
function [output] = TLU( inputs, weights, threshold )
activationMagnitude = sum(weights.*inputs)
if activationMagnitude > threshold
output = true;
else
output = false;
end
But when I use class(ans) it always shows a char data type - despite me specifying the output as either true or false!
Why is this?
Best regards,
Craig

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Thorsten
Thorsten 2013-2-14
编辑：Thorsten 2013-2-14
There's nothing wrong with your function, you can just do it more concisely
function output = TLU( inputs, weights, threshold )
output = sum(weights.*inputs) > threshold;
Then
y = TLU([1 2 3], [ 4 5 6 ], 100)
yields
y =
0
And
class(y)
yields
ans =
logical
But of course then class(ans) gives char (because ans is the string 'logical'), but this has nothing to do with the class returned by your function.

更多回答（1 个）

José-Luis
José-Luis 2013-2-14
It does return logical for me.
What does
class(TLU(rand, rand, rand))
return? If ans returns something different, you may have overwritten its value before you call to class()

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